A Kiss Before Dying

Head to Bravil and locate the Lucky Old Lady statue at the center of town. Wait around until between the hours of 6:00 PM and 1:00 AM and the target, Ungolim, will show up. Time to kill!

Your dead drop orders suggest a sneak attack, but Ungolim is actually pretty weak. Such careful actions aren't necessary. When Ungolim appears, quickly attack with melee weapons. The enemy uses only a bow and should go down without much effort. When he's dead, Lucien will appear and tell you about your next order.